BUD-03 defines how users publish their preferred Blossom servers, enabling clients to discover where to upload and retrieve a user’s media files.

How It Works

Users publish a kind 10063 event listing their Blossom servers. Clients can then:

  • Upload media to the user’s preferred servers
  • Discover where to find a user’s blobs when given their pubkey

This enables author-based discovery as an alternative to embedding server URLs directly in content.

Primary sources:

See also: